alright @tehn / @simonvanderveldt
pi 3b, shield is fully built, imaged the SD. when I plug in I get a solid red light, an irregular series of flashes from the green light, then green light off for a bit, then scattered flashes maybe. no other activity besides that (on the screen or coming from headphones (I do get a click on power through headphones)). I tried holding down all the keys for various amounts of time as well. (of note: led activity seems consistent across pi w/ shield and a second pi that I never plugged the shield into)
any troubleshooting I can do with ethernet / router ? first time SMD job, so there can easily be hardware issues. I tested for shorts between power and ground pins on the pi GPIO headers (w/ shield on). would it be best to try and isolate issues with hardware ?